:1:39 SEGEEE A2_STA304H1_Q2_W2020 Question 2. ( 12 marks) Suppose that a city has 90000 dwelling units, of which 35000 are houses, 45000 are apartments, and 10000 are condominiums. We want to estimate the overall proportion (p) of households in which energy conservation is practiced, with a bound on the error of estimation equal 0.1. (a) (4 marks) Find the strata sample sizes, 711,712, and 71,3, and the sample size n. (b) (4 marks) Suppose that from an earlier study, we know that 47% of house dwellers, 23% of appartment dwellers, and 3% of condominum residents practice energy conservation. Using the appropriate allocation method, Find the sample size n, and strata sample sizes, 711,712, and n3. (c) (4 marks) Suppose the cost for obtaining an observation is $ 9 for houses, 10$ for appartment, and 16 $ for condominiums. We also assume that from an earlier study, we know that 47% of house dwellers, 23% of appartment dwellers, and 3% of condominum residents practice energy conservation. Find the strata sample sizes, n1, 71,2, and ng, and the sample size n